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https://issues.apache.org/jira/browse/HBASE-4671?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13135180#comment-13135180
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Ferdy commented on HBASE-4671:
------------------------------
(Changing 127.0.1.1 to 127.0.0.1 in the hosts file that is.)
> HBaseTestingUtility unable to connect to regionserver because of 127.0.0.1 /
> 127.0.1.1 discrepancy
> --------------------------------------------------------------------------------------------------
>
> Key: HBASE-4671
> URL: https://issues.apache.org/jira/browse/HBASE-4671
> Project: HBase
> Issue Type: Bug
> Components: test
> Affects Versions: 0.90.4
> Environment: At least Ubuntu 11.10 with a default hosts file.
> Reporter: Ferdy
>
> When /etc/hosts contains following lines (and this is not uncommon) it will
> cause HBaseTestingUtility to malfunction.
> 127.0.0.1 localhost
> 127.0.1.1 myMachineName
> Symptoms:
> 2011-10-25 17:38:30,875 WARN master.AssignmentManager - Failed assignment of
> -ROOT-,,0.70236052 to serverName=localhost,34462,1319557102914,
> load=(requests=0, regions=0, usedHeap=46, maxHeap=865), trying to assign
> elsewhere instead; retry=0
> org.apache.hadoop.hbase.client.RetriesExhaustedException: Failed setting up
> proxy interface org.apache.hadoop.hbase.ipc.HRegionInterface to
> /127.0.0.1:34462 after attempts=1
> because
> 2011-10-25 17:38:28,371 INFO regionserver.HRegionServer - Serving as
> localhost,34462,1319557102914, RPC listening on /127.0.1.1:34462,
> sessionid=0x1333bbb7a180002
> caused by /127.0.0.1:34462 vs /127.0.1.1:34462
> Workaround:
> Changing 127.0.1.1 to 127.0.0.1 works.
> Permanent solution:
> Dunno, my understanding of inner workings is not sufficient enough. Although
> it seems like it has something to do with changing the machine name from
> myMachineName to localhost during the test:
> 2011-10-25 17:38:28,056 INFO regionserver.HRegionServer - Master passed us
> address to use. Was=myMachineName:34462, Now=localhost:34462
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